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Everyday Science MCQs with Answers (292 Solved Questions)

Paradigm Shift · CSS/PMS Prep
292 MCQs with explanations · sampled rounds, practise endlessly.

Practise 292 everyday science MCQs with answers and explanations covering physics in daily life, chemistry basics, human biology, diseases and vitamins, space science, famous inventions and discoveries, and computer and IT fundamentals. These general science MCQs for CSS match the exact mix tested in CSS General Science & Ability and FPSC one-paper exams.

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Choose a topic and difficulty, then press Start Practice. Each round pulls a random set of questions, so no two rounds are the same.

Study aid for practice. Verify critical facts against primary sources before relying on them in your exam.

Which everyday science MCQs are most repeated in CSS?

Human body systems, vitamins and deficiency diseases, units and measuring instruments, space and the solar system, and inventors and discoverers recur most frequently. Basic IT questions are now standard in FPSC one-paper tests.

How is General Science & Ability structured in CSS?

The GSA paper mixes conceptual science with basic quantitative ability. This bank covers the science half; pair it with our CSS Maths Practice page for the ability half.

Do the explanations give the underlying concept?

Yes — each answer includes a one-line explanation of the principle rather than just the correct option, so revision doubles as concept review.

Are computer and IT questions included?

Yes: hardware, software, internet basics and common abbreviations are covered, matching the growing IT share in FPSC and PPSC papers.

Continue your CSS preparation

Where can I practise everyday science MCQs with answers?

This page is a free bank of everyday science MCQs with answers and explanations, tiered from easy to hard. Every question shows why the correct option is right, so revision doubles as concept review rather than rote memorisation.

Sample Everyday Science & IT MCQs with answers

A selection from this bank (25 of 292). Open any question to reveal the answer and explanation — use Start Practice above for the full randomised bank.

The main constituent of biogas is:
  1. Carbon dioxide
  2. Hydrogen
  3. Oxygen
  4. Methane

Answer: Methane. Biogas is mostly methane (CH4), produced by anaerobic decomposition of organic matter.

Which of the following is a nutritional deficiency disease?
  1. Albinism
  2. Cirrhosis
  3. Rabies
  4. Pellagra

Answer: Pellagra. Pellagra, caused by niacin (vitamin B3) deficiency, is a nutritional deficiency disease.

The ELISA test is primarily used to screen for:
  1. Corona virus
  2. HIV/AIDS antibodies
  3. Tuberculosis bacterium
  4. Cancer

Answer: HIV/AIDS antibodies. The ELISA test is commonly used to screen for HIV/AIDS antibodies.

Any disease naturally transmissible from vertebrate animals to humans is called:
  1. Zoonoses
  2. Chordnoses
  3. Ananoses
  4. Neuroses

Answer: Zoonoses. Diseases transmissible from animals to humans are called zoonoses.

Vitamins were discovered by:
  1. Moseley
  2. Chadwick
  3. Frank Whittle
  4. Casimir Funk

Answer: Casimir Funk. Casimir Funk coined the term 'vitamine' and is credited with their discovery.

BCG vaccine is used to produce immunity against:
  1. Malaria
  2. Tuberculosis
  3. Whooping cough
  4. Smallpox

Answer: Tuberculosis. The BCG vaccine gives immunity against tuberculosis.

In the periodic table, which element is the most reducing agent?
  1. Chlorine
  2. Lithium
  3. Helium
  4. Neon

Answer: Lithium. Lithium, readily losing its electron, is the strongest reducing agent among common elements.

The upper boundary of the mesosphere (the mesopause) is at about:
  1. 85 km
  2. 50 km
  3. 40 km
  4. 10 km

Answer: 85 km. The mesopause, the top of the mesosphere, lies at about 85 km altitude.

Which lung condition related to smoking involves damage to the alveoli sacs?
  1. Asthma
  2. Lung cancer
  3. Bronchitis
  4. Emphysema

Answer: Emphysema. Emphysema, linked to smoking, damages the alveoli of the lungs.

The temperature at which water boils depends mainly on:
  1. Air temperature
  2. Relative humidity
  3. Air pressure
  4. Air density

Answer: Air pressure. Water's boiling point depends mainly on the surrounding air pressure.

The Earth-atmosphere system (clouds, surface and particulates) reflects back into space about what part of the Sun's incoming radiation?
  1. 10%
  2. 20%
  3. 30%
  4. 50%

Answer: 30%. The Earth-atmosphere system reflects roughly 30% of incoming solar radiation (its albedo).

Which vitamin is synthesized in the human skin in the presence of sunlight?
  1. Vitamin A
  2. Vitamin B
  3. Vitamin C
  4. Vitamin D

Answer: Vitamin D. Vitamin D is synthesized in the skin on exposure to sunlight.

Deficiency of vitamin C causes:
  1. Rickets
  2. Scurvy
  3. Night blindness
  4. Beriberi

Answer: Scurvy. Scurvy results from vitamin C deficiency.

Deficiency of vitamin A causes:
  1. Scurvy
  2. Night blindness
  3. Rickets
  4. Anaemia

Answer: Night blindness. Night blindness results from vitamin A deficiency.

Deficiency of vitamin D causes:
  1. Scurvy
  2. Rickets
  3. Goitre
  4. Pellagra

Answer: Rickets. Rickets results from vitamin D deficiency.

Deficiency of iodine causes:
  1. Anaemia
  2. Goitre
  3. Scurvy
  4. Rickets

Answer: Goitre. Iodine deficiency causes goitre (enlarged thyroid).

Deficiency of iron in the human body causes:
  1. Goitre
  2. Anaemia
  3. Rickets
  4. Scurvy

Answer: Anaemia. Iron deficiency causes anaemia.

The largest gland in the human body is the:
  1. Pancreas
  2. Liver
  3. Thyroid
  4. Pituitary

Answer: Liver. The liver is the largest gland in the human body.

The smallest bone in the human body is located in the:
  1. Nose
  2. Ear
  3. Hand
  4. Foot

Answer: Ear. The stapes in the middle ear is the smallest bone in the body.

The largest bone in the human body is the:
  1. Femur
  2. Tibia
  3. Humerus
  4. Sternum

Answer: Femur. The femur (thigh bone) is the longest and largest bone in the body.

The number of bones in the adult human body is:
  1. 195
  2. 206
  3. 201
  4. 210

Answer: 206. An adult human body has 206 bones.

The normal human body temperature is about:
  1. 35°C
  2. 37°C
  3. 39°C
  4. 40°C

Answer: 37°C. Normal human body temperature is about 37°C (98.6°F).

The universal donor blood group is:
  1. A
  2. B
  3. AB
  4. O

Answer: O. Blood group O (negative) is the universal donor.

The universal recipient blood group is:
  1. O
  2. A
  3. B
  4. AB

Answer: AB. Blood group AB (positive) is the universal recipient.

The pH of pure water is:
  1. 5
  2. 6
  3. 7
  4. 8

Answer: 7. Pure water is neutral, with a pH of 7.